JASSIM ISSA, R. Construction and protection of secure databases for the General Company for the distribution of petroleum products in Mosul. Journal of Education and Science, [S. l.], v. 24, n. 1, p. 163–178, 1999. DOI: 10.33899/edusj.1999.51411. Disponível em: https://edusj.uomosul.edu.iq/index.php/edusj/article/view/42031. Acesso em: 10 sep. 2025.